mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 03:50:53 +07:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
140 lines
3.2 KiB
C
140 lines
3.2 KiB
C
/*
|
|
* $Id: proc.c,v 1.1.2.1 1998/06/07 23:21:01 geert Exp $
|
|
*
|
|
* Procfs interface for the Zorro bus.
|
|
*
|
|
* Copyright (C) 1998-2003 Geert Uytterhoeven
|
|
*
|
|
* Heavily based on the procfs interface for the PCI bus, which is
|
|
*
|
|
* Copyright (C) 1997, 1998 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/zorro.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/init.h>
|
|
#include <linux/smp_lock.h>
|
|
#include <asm/uaccess.h>
|
|
#include <asm/amigahw.h>
|
|
#include <asm/setup.h>
|
|
|
|
static loff_t
|
|
proc_bus_zorro_lseek(struct file *file, loff_t off, int whence)
|
|
{
|
|
loff_t new = -1;
|
|
|
|
lock_kernel();
|
|
switch (whence) {
|
|
case 0:
|
|
new = off;
|
|
break;
|
|
case 1:
|
|
new = file->f_pos + off;
|
|
break;
|
|
case 2:
|
|
new = sizeof(struct ConfigDev) + off;
|
|
break;
|
|
}
|
|
if (new < 0 || new > sizeof(struct ConfigDev)) {
|
|
unlock_kernel();
|
|
return -EINVAL;
|
|
}
|
|
unlock_kernel();
|
|
return (file->f_pos = new);
|
|
}
|
|
|
|
static ssize_t
|
|
proc_bus_zorro_read(struct file *file, char *buf, size_t nbytes, loff_t *ppos)
|
|
{
|
|
struct inode *ino = file->f_dentry->d_inode;
|
|
struct proc_dir_entry *dp = PDE(ino);
|
|
struct zorro_dev *z = dp->data;
|
|
struct ConfigDev cd;
|
|
loff_t pos = *ppos;
|
|
|
|
if (pos >= sizeof(struct ConfigDev))
|
|
return 0;
|
|
if (nbytes >= sizeof(struct ConfigDev))
|
|
nbytes = sizeof(struct ConfigDev);
|
|
if (pos + nbytes > sizeof(struct ConfigDev))
|
|
nbytes = sizeof(struct ConfigDev) - pos;
|
|
|
|
/* Construct a ConfigDev */
|
|
memset(&cd, 0, sizeof(cd));
|
|
cd.cd_Rom = z->rom;
|
|
cd.cd_SlotAddr = z->slotaddr;
|
|
cd.cd_SlotSize = z->slotsize;
|
|
cd.cd_BoardAddr = (void *)zorro_resource_start(z);
|
|
cd.cd_BoardSize = zorro_resource_len(z);
|
|
|
|
if (copy_to_user(buf, &cd, nbytes))
|
|
return -EFAULT;
|
|
*ppos += nbytes;
|
|
|
|
return nbytes;
|
|
}
|
|
|
|
static struct file_operations proc_bus_zorro_operations = {
|
|
.llseek = proc_bus_zorro_lseek,
|
|
.read = proc_bus_zorro_read,
|
|
};
|
|
|
|
static int
|
|
get_zorro_dev_info(char *buf, char **start, off_t pos, int count)
|
|
{
|
|
u_int slot;
|
|
off_t at = 0;
|
|
int len, cnt;
|
|
|
|
for (slot = cnt = 0; slot < zorro_num_autocon && count > cnt; slot++) {
|
|
struct zorro_dev *z = &zorro_autocon[slot];
|
|
len = sprintf(buf, "%02x\t%08x\t%08lx\t%08lx\t%02x\n", slot,
|
|
z->id, zorro_resource_start(z),
|
|
zorro_resource_len(z), z->rom.er_Type);
|
|
at += len;
|
|
if (at >= pos) {
|
|
if (!*start) {
|
|
*start = buf + (pos - (at - len));
|
|
cnt = at - pos;
|
|
} else
|
|
cnt += len;
|
|
buf += len;
|
|
}
|
|
}
|
|
return (count > cnt) ? cnt : count;
|
|
}
|
|
|
|
static struct proc_dir_entry *proc_bus_zorro_dir;
|
|
|
|
static int __init zorro_proc_attach_device(u_int slot)
|
|
{
|
|
struct proc_dir_entry *entry;
|
|
char name[4];
|
|
|
|
sprintf(name, "%02x", slot);
|
|
entry = create_proc_entry(name, 0, proc_bus_zorro_dir);
|
|
if (!entry)
|
|
return -ENOMEM;
|
|
entry->proc_fops = &proc_bus_zorro_operations;
|
|
entry->data = &zorro_autocon[slot];
|
|
entry->size = sizeof(struct zorro_dev);
|
|
return 0;
|
|
}
|
|
|
|
static int __init zorro_proc_init(void)
|
|
{
|
|
u_int slot;
|
|
|
|
if (MACH_IS_AMIGA && AMIGAHW_PRESENT(ZORRO)) {
|
|
proc_bus_zorro_dir = proc_mkdir("zorro", proc_bus);
|
|
create_proc_info_entry("devices", 0, proc_bus_zorro_dir,
|
|
get_zorro_dev_info);
|
|
for (slot = 0; slot < zorro_num_autocon; slot++)
|
|
zorro_proc_attach_device(slot);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
__initcall(zorro_proc_init);
|